package com.atguigu.gulimall.cart.controller;

import com.atguigu.gulimall.cart.interceptor.CartInterceptor;
import com.atguigu.gulimall.cart.service.CartService;
import com.atguigu.gulimall.cart.vo.CartItemVO;
import com.atguigu.gulimall.cart.vo.CartVO;
import com.atguigu.gulimall.cart.vo.UserInfoTo;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.annotation.Resource;
import java.util.List;
import java.util.concurrent.ExecutionException;

/**
 * @Author baiWT
 * @Description
 * @Date 2022/4/7 12:05
 **/
@Controller
public class CartController {

    @Resource
    private CartService cartService;

    @ResponseBody
    @GetMapping("/getCurrentUserCartItems")
    public List<CartItemVO> getCurrentUserCartItems(){
        return cartService.getCurrentUserCartItems();
    }

    /**
     * 删除购物车商品
     * @param skuId
     * @return
     */
    @GetMapping("/deleteItem")
    public String deleteItem(@RequestParam("skuId") Long skuId){
        cartService.deleteItem(skuId);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    /**
     * 更改商品数量
     * @param skuId
     * @param count
     * @return
     */
    @GetMapping("/cart/change/count")
    public String change(@RequestParam("skuId") Long skuId,@RequestParam("count") Integer count){
        cartService.change(skuId,count);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    /**
     * 勾选购物项
     * @param skuId
     * @param checked
     * @return
     */
    @GetMapping("/cart/change/status")
    public String checkItem(@RequestParam("skuId") Long skuId,@RequestParam("checked") boolean checked){
        cartService.checkItem(skuId,checked);
        return "redirect:http://cart.gulimall.com/cart.html";
    }

    /**
     * 浏览器有一个cookie，user-key；标识用户身份，一个月后过期；
     * 如果第一次使用jd的购物车功能，都会给一个临时身份；
     * 浏览器保存以后，每次访问都会带上这个cookie；
     *
     * 登录：session有
     * 没登录：按照cookie里面带来user-key来做
     * 第一次：如果没有临时用户，帮忙创建一个临时用户
     * @return
     */
    @GetMapping("/cart.html")
    public String cartListPage(Model model) throws ExecutionException, InterruptedException {

        CartVO cart = cartService.getCart();
        model.addAttribute("cart",cart);

        return "cartList";
    }

    /**
     * 添加商品到购物车
     * @param skuId
     * @param num
     * @param ra
     * @return
     * @throws ExecutionException
     * @throws InterruptedException
     */
    @GetMapping("/addToCart")
    public String addToCart(@RequestParam("skuId") Long skuId, @RequestParam("num") Integer num, RedirectAttributes ra) throws ExecutionException, InterruptedException {

        cartService.addToCart(skuId,num);
        //model.addAttribute("skuId",skuId);
        ra.addAttribute("skuId",skuId);
        return "redirect:http://cart.gulimall.com/addToCartSuccess.html";
    }

    /**
     * 跳转购物车成功页
     * @param skuId
     * @param model
     * @return
     */
    @GetMapping("/addToCartSuccess.html")
    public String addToCartSuccessPage(@RequestParam("skuId") Long skuId,Model model){
        //重定向到成功页面，再次查询购物车数据即可
        CartItemVO cartItemVO = cartService.getCartItem(skuId);
        model.addAttribute("item",cartItemVO);
        return "success";
    }
}
